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The relationship between market investigation and sales promotion is just as that of the lipsand teeth. It is impossible to succeed in selling a product without market investigation. There are various ways of making market investigation. Production goes before market investigation.
in market, goods on sale are numerous every producer is facing keen competition it can greatly promote sales all of the above
impossible essential advisable available
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in the market for on the market for entering the market for at the market for
等于发射频率 为fo－63MHz 为fo＋63MHz 为fo±63MHz中的一个
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